Deployment

Single and Clustered node deployment is described in detail in the Install Guide.

In a clustered topology, a number of nodes with different roles are clustered together and provisioned to form a networked system. When nodes are clustered together, High Availability and Disaster Recovery can be achieved by ensuring that there are redundant services. Nodes can be deployed in any order.

Once two or more nodes have been deployed, the nodes can be grouped into a cluster by executing cluster add <ip>. Note that a node already in one cluster cannot be added to another cluster. Likewise, nodes can be removed from a cluster with the cluster del <ip> command. The nodes in the cluster can be displayed using cluster list.

Cluster roles cannot be changed after installation because it is dependent on installed software and other configuration at time of deployment.

The status of the cluster can be viewed using cluster status.

If the node topology needs to be changed, the following procedure can be followed:

• A node can be removed from the cluster with cluster del <ip>
• The node can be redeployed with the correct parameters
• Add the new node to the cluster with cluster add <ip>
• Provision the cluster with cluster provision. This command should only be run on one node in the cluster, usually an application server.